$OpenBSD: patch-CMakeLists_txt,v 1.1 2014/12/26 00:17:30 zhuk Exp $
Unbreak with CMake 3.1+.
--- CMakeLists.txt.ports.orig	Fri Dec 26 03:12:29 2014
+++ CMakeLists.txt	Fri Dec 26 03:12:39 2014
@@ -1,4 +1,5 @@
 project(marble)
+cmake_minimum_required(VERSION 2.8)
 
 ####################################################
 # CMake Settings
